220220423136 has 240 divisors, whose sum is σ = 760192636896. Its totient is φ = 61219390464.

The previous prime is 220220423123. The next prime is 220220423167. The reversal of 220220423136 is 631324022022.

It is a happy number.

220220423136 is a `hidden beast` number, since 2 + 2 + 0 + 220 + 423 + 13 + 6 = 666.

220220423136 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 507310 + ... + 835346.

Almost surely, 2^220220423136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220220423136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (380096318448).

220220423136 is an abundant number, since it is smaller than the sum of its proper divisors (539972213760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

220220423136 is a wasteful number, since it uses less digits than its factorization.

220220423136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328103 (or 328086 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 220220423136 its reverse (631324022022), we get a palindrome (851544445158).

The spelling of 220220423136 in words is "two hundred twenty billion, two hundred twenty million, four hundred twenty-three thousand, one hundred thirty-six".